Every morning and evening after we milk the goats, we pour two quarts of the milk into jars for ourselves. The milk that is left over we pour into a dish on the deck for the cats. When the cats see us coming from the barn with the milker they make a mad dash for the deck and wait for their bowl to be filled. So a cat really can be trained when it involves their stomachs!
p.s. don't tell them that I said they could be trained